Unlock Vectorman and Vectorman 2, and accumulate a total of twelve hours of game play time in Sonic Gems Collection. Then, play Bonanza Bros. at least once, or play a combination of any other games over thirty times to unlock Bare Knuckle.

Bare Knuckle 2 (Japanese version)

Unlock Vectorman and Vectorman 2, and accumulate a total of twelve hours of game play time in Sonic Gems Collection. Then, play Bare Knuckle at least once, or play a combination of any other games over fifty times to unlock Bare Knuckle 2.

Bare Knuckle 3 (Japanese version)

Unlock Vectorman and Vectorman 2, and accumulate a total of twelve hours of game play time in Sonic Gems Collection. Then, play Bare Knuckle 2 at least once, or play a combination of any other games over seventy times to unlock Bare Knuckle 3.

Bonanza Bros. (Japanese version)

Unlock Vectorman and Vectorman 2, and accumulate a total of twelve hours of game play time in Sonic Gems Collection. Then, play Vectorman 2 at least once, or play a combination of any other games over twenty times to unlock Bonanza Bros..

Vectorman

Have a saved game file from Sonic Heroes or Sonic Mega Collection Plus on your memory card to unlock Vectorman. Alternately, accumulate a total of five hours of game play time in Sonic Gems Collection.

Vectorman 2

Accumulate a total of seven hours of game play time in Sonic Gems Collection and play Vectorman at least once to unlock Vectorman 2.

Hints

Allow a game to idle for over three hours to unlock the "Hints" option in the "Extra" menu.

Unlocking Museum games

Play Sonic Gems Collection once every day and accumulate over 24 hours of game play time. Then, start the game 30 to 70 times to unlock the different end Bosses to many classic Sonic games that you can play.

Unlocking Museum bonuses

To unlock most of the pictures in the Museum, just start each of the main games five or ten times. Then, play each one for a few hours. Just leave the game idling; you do not have to be actually playing for that amount of time.

To unlock the playable endings, three movie trailers, and the last picture in the museum faster, change the day portion of the PlayStation 2's system date. For example, change August 25, 2005 to August 26, 2005. Then, start the game. Once you go to the museum you will have more playable endings and/or movie trailers unlocked. Repeat this process until you have all three movie trailers and sixteen playable endings in the museum. This will also get you closer to unlocking the final illustration.

Unlock full versions of game demos

Once you have unlocked all the playable ending demos, use the following trick to unlock their full game counterparts. Go to Sonic The Hedgehog (either version), Sonic 2, Sonic 3, Sonic 3D Blast, Sonic Spinball, Robotnik's Mean Bean Machine, or Sonic Chaos. Keep intentionally killing Sonic until you are out of lives. The game will end, then restart at its own title screen. From there, you can start at level 1 of the game and play until the timer reaches zero.

Soundtrack songs

Can You Feel The Sunshine ACID Mix: Accumulate a total of three hours of game play time in Sonic R

Living in the City LTN Mix: Start Sonic R ten times (entering and exiting the game also works)

Sonic 6290 Mix and Sonic Boom D'mb Mix: Start Sonic CD five times (entering and exiting the game also works)

Sonic After 6290 Mix: Start Sonic CD ten times (entering and exiting the game also works)

Museum pictures

Sonic Adventure DX Artwork Set 1: Play Sonic Spinball five times

Sonic Adventure DX Artwork Set 2: Play Sonic Spinball ten times

Sonic Adventure DX Artwork Set 3: Accumulate a total of one hour of game play time in Sonic Spinball

Sonic Adventure DX Artwork Set 4: Accumulate a total of two hours of game play time in Sonic Spinball

Sonic CD Artwork Set 1: Play Sonic CD five times

Sonic CD Artwork Set 2: Play Sonic CD ten times

Sonic CD Artwork Set 3: Accumulate a total of one hour of game play time in Sonic CD

Sonic CD Artwork Set 4: Accumulate a total of two hours of game play time in Sonic CD

Sonic Championship logo: Successfully complete Sonic: The Fighters

Sonic Heroes Movie Artwork Set 2: Play Tails Adventure ten times

Sonic Heroes Movie Artwork Set 3: Accumulate a total of one hour of game play time in Tails Adventure

Sonic Heroes Movies Artwork Set 1: Play Tails Adventure five times

Sonic R Artwork Set 1: Play Sonic R five times

Sonic R Artwork Set 2: Play Sonic R ten Times

Sonic R Artwork Set 3: Accumulate a total of one hour of game play time in Sonic R

Sonic R Artwork Set 4: Accumulate a total of two hours of game play time in Sonic R

Sonic The Fighters Artwork Set 3: Accumulate over 1 hour of game play in Sonic: The Fighters

Sonic The Fighters Artwork Set 1: Play Sonic: The Fighters five times

Sonic The Fighters Artwork Set 2: Play Sonic: The Fighters ten Times

Sonic The Fighters Artwork Set 4: Accumulate a total of two hours of game play time in Sonic: The Fighters

Sonic Adventure Intro Video: Accumulate over 24 hours of game play time with over 70 overall games played

Sonic Heroes Trailer: Accumulate over 24 hours of game play time with over 30 overall games played

Sonic's History Video: Accumulate over 24 hours of game play time with over 50 overall games played

Museum slide show

While looking at a Museum picture, press Circle to start a slide show featuring all unlocked pictures.

Bare Knuckle 3

Play as Ash

Immediately after giving the ending hit to Ash, hold Square until the next part of the level starts. Then, intentionally lose all your lives. Choose to continue and Ash will be a selectable character.

Play as Shiva

Immediately after giving the ending hit to Shiva, hold X until level 2 starts. Then, intentionally lose all your lives. Choose to continue and Shiva will be a selectable character.

Play as Victy

Only defeat the clown during the Boss battle at the end of first part of level 2. Then, intentionally lose all your lives. Choose to continue and Victy will be a selectable character.

Sonic CD

Time Attack mode options

Successfully complete the game, then restart the game in "Time Attack" mode. The following options will be available if the "Time Attack" game can be completed within the corresponding time limit:

Music test

Successfully complete "Time Attack" mode within 37:27:57. A "D.A. Garden" option will appear to the left of the "RAM Data" option on the main menu. The Planet of Mobius will be displayed.

Play bonus levels

Successfully complete "Time Attack" mode within 30:21:05, then press Left at the "Time Attack" screen.

View video sequences

Successfully complete "Time Attack" mode within 25:46:12. A "Visual Mode" option will appear to the left of "D.A. Garden" option on the main menu. Use this option to view the video sequences in the game.

Level select

At the Sonic CD title screen, press Up, Down(2), Left, Right, X.

Programmer high scores

At the Sonic CD title screen, press Right(2), Up(2), Down, X.

Sound test mode options

At the Sonic CD title screen while "Press Start" is blinking, press Down(3), Left, Right, X to display the sound test menu. Set one of the following sound combinations and press Start to activate the corresponding cheat function:

Sonic R

Finish in first place on all normal courses to unlock the Radiant Emerald course.

Play as Dr. Robotnik

Finish in first place on the Radiant Emerald course to unlock Dr. Robotnik. Alternately, successfully complete all levels.

Play as Mecha Knuckles

Collect all five coins in Radioactive Factory, and finish in first, second, or third place. Then, defeat Mecha Knuckles in a race to unlock him.

Play as Mecha Robotnik

Collect all five coins in Regal Ruins and finish in first, second, or third place. Then, defeat Mecha Robitnik in a race to unlock him.

Play as Mecha Sonic

Collect all five coins on Resort Island and finish in first, second or third place. Then, defeat Mecha Sonic in a race to unlock him.

Play as Puppet Tails

Collect all five coins in Radical City and finish in first, second, or third place. Then, defeat Puppet Tails in a race to unlock him.

Play as Super Sonic

Collect all seven Chaos Emeralds from the first four courses. To collect a Chaos Emerald, you must collect it and finish in first place in that race. Then, press Down while highlighting Sonic at the character selection screen.

Play as robot form character

Get the five Sonic coins in one of the following levels to play as the robot form for the indicated character:

Mecha Knuckles: Reactive Factory

Mecha Robotnik: Any level with Robotnik

Mecha Sonic: Resort Island

Puppet Tails: Radical City

Alternate title screen

Successfully complete Sonic R with all characters, including bonus characters. Then, go to the Sonic R title screen and use the Analog-stick to move the "R". Press Triangle to change the color of the "R".

Control course selection screen

At the course selection screen, press Up or Down to move closer or farther away.

Skip credits

After completing the game with any character, hold Square or Circle and press Start to skip the credits.

Sonic Spinball

Skip to Boss level

Enter the options menu and select the "SFX" option. Play sounds 0, 2, 1, 5, 6, 6 (in order). If you entered the code correctly, the screen will shake. While playing the game, press X + Square + Start to enable the code.

Sonic-Zilla

Enter the options menu and select the "SFX" option. Play sounds 0, 2, 1, 1, 6, 6 (in order). If you entered the code correctly, the screen will shake.

No gravity

Enter the options menu and select the "SFX" option. Play sounds 0, 9, 0, 1, 6, 8 (in order). If you entered the code correctly, the screen will shake. While playing the game, press X + Square + Start to enable the code.

Fast music

Enter the options menu and select the "SFX" option. Play sounds 0, 4, 2, 5, 5, 7 (in order). If you entered the code correctly, the screen will shake. While playing the game, press X + Square + Start to enable the code.

Sonic: The Fighters

Play as Super Sonic

Choose Sonic in single player mode. Win eight matches without losing any rounds, then defeat Metal Sonic in the first round of the ninth match. When round two starts, press Away + Punch + Kick to activate Hyper mode. Sonic will turn into Super Sonic.

Sonic The Hedgehog: Triple Trouble

Extra options

At the Sega logo, press Up or Down to access time attack and sound test options.

Tails Adventure

Level select and all items

Enter "ADE7 AA2A 51A6 6D12" as a password to access any area with all items.

Move Vectorman below the Sega logo screen and shoot it 24 times. Jump and hit the logo with Vectorman's head 12 times. The phrase "Get Ready" will appear, then each letter in "Sega" will begin to fall. Collect 90 to 109 letters to warp to level 5. Catch 110 or more to warp to level 10.

Pause the game and press Circle, Square, Left(2), Square, Circle, Square, X. Vectorman will transform into a cursor that can be moved to any location in the level. Opponents, except for Bosses, are eliminated if they are touched by the cursor. Repeat this code to disable its effect. Note: Enable this code when Vectorman is a bomb for invisibility and invincibility for the remainder of the level.

Slow motion

Pause the game and press Down, Right, Square, Circle, Up, Left, Square. The game will slow down when Vectorman is hit. Repeat this code to disable its effect.

Level bonuses

Successfully complete a level without shooting any targets for a point bonus. Successfully complete a level without using photons for a photon bonus.

Vectorman 2

Pause the game and press Circle, Square, Left(2), Down, Square, Down repeatedly until the sound of the orb weapon stops. Press Start to resume the game as a Fire Ant. Repeat this code to transform into a Shield Bug. Note: Playing the bonus rounds as a Shield Bug will result in invincibility.